Surface-dressing machine.



No. 795,997. 1 Y Q PATENTED AUG. 1, 1905. I I D. MATHEWS.

SURFACE DRESSING MACHINE. 'APPLIQATION FILED 0017, 1904. I

UNITED STATES PATENT OFFICE.

SURFACE-DRESSING MACHINE.

Specification of Letters Patent.

1 atenteci Aug. 1, 1905.

- Application filed October 7,1904. Serial No. 227,578.

T0 ally/ham it may concern: 7

Be it known that I, DICK MATHEWS, a citiof California, have invented new and useful Improvements in Surface-Dressing Machines, of which the following is a specification.

My invention relates to a portable machine for dressing the surface of a laid floor or for dressing the surface of building material, and the object thereof is to provide a simple and efficient machine for that purpose. I accomplish this object by the mechanism described herein and illustrated in the accompanying drawings, in Which Figure 1 is a side elevation of my machine with an electric motor attached thereto by means of which the surface-dressing mechanism is operated. Fig. 2 is a sectional view on line 2 2 of Fig. 3, the bottom plates being shown in elevation. Fig. 3 is a view of the rear end of the machine, the guiding-handle being omitted for clearness of illustration. Figs. 4, 5, and 6 are views showing details of construction of parts of my machine.

In the drawings, 7 is the top, 8 the front, 9 the rear end, and 10 and 11 are the sides, of the case or box of my surface-dressing machine. A revoluble planer-head 12, having trunnions 12 at the ends thereof, is mounted in bearings 13, removably secured to the sides of the case. Gutter-bits 14: are adj ustably secured to the planer-head bylag-bolts 15, which pass through slots 16 in the bits. Exteriorly of the case one of the trunnions 12 carries a pulley 17, over which passes a belt 18, by means of which the head is driven, said belt passing over a pulley 19, secured to shaft 20, which last shaft is the driving-shaft of motor 21. The motor is securely fastened to the top of the case and is connected through controller 22, secured upon the handle, to a source of electricalenergy. (Notshown) Othermeans may be used to operate the planer-head. The sides of the case at the bottom thereof slant upwardly from near the central line which passes vertically through head 12, as shown in Fig. 1. The bottom of the case is formed by the adjustable bottom-plates 23 and 23, which are provided with upstanding lugs 24 on the top thereof and wedge-shaped flanges 25 on the sides thereof. These flanges areof the same taper as the taper of the sides 10 and 11. In the sides of the case and in line to register with the lugs 24 of the adjustable bottom-plates are slots 26, through which pass bolts 27, engaging screw-threaded openings 28 in lugs 24, by means of which the position of the movable sections 23 23 of the bottom may be adjusted toward or from the cutter-bits to regulate the depth of the out to be made by the cutter-bits. Passing over the bits and projecting through the rear end of the case is a discharge-spout 30, through which the shavings are discharged into a sack 31, which is secured to the handle 32, which handle is pivotally attached to the case at 33. This handle straddles the case and at each side thereof is provided with slotted lugs 34,

. through which passes a bolt 35, which bolt also passes through the case and is provided on its end with a nut, so as to adjust the inclination of the handle with reference to the case.

In the operation of my machine when used for planing a floor the front portion 23 of the bottom is adjusted so as to rest upon the surface of the floor before it is planed, and the rear portion 23 of the bottom of the case is adjusted so that it will rest upon the surface of the floor after it is planed. Power is then turned on to operate the motor, and the machine is pushed over the floor to be planed. The revolution of cutter-bits will draw air through slot 36 in the rear end of the case and cause its discharge into thehopper-opening 37 of the spout, from whence it passes out through the discharge-spout, carrying with it shavings produced by planing the floor. After the floor is planed if it is desired to further smooth the same the planer-head may be removed from the bearings and a sandpaper roll 37 substituted therefor and the floor can then be sandpapered. My surfacedressing machine can be secured to a workbench or other support (not shown) and the material to be dressed may be passed over the bits.

Having described myinvention, what I claim as new, and desire to secure by Letters Patent,

1. A portable surfacing-machine, comprising a hollow casing, the sides of which are each oppositely beveled or inclined, the sides also provided with a pair of oppositely-inclined slots, a bottom upon which the casing is supported, the bottom comprising a series of plates, wedge-shaped flanges located laterally of the plates, the beveled edges of the sides resting on the flanges, means passing through the slots and engaging the plates to adjustably retain them in position and a suitably-driven cutter adapted to engage the work at a point between the plates.

2. In a portable surfacing-machine, the combination with a work-engaging cutter and means for actuating the same, of a hollow inverted casing, a bottom comprising a plurality of plates, means for adjustably connecting the plates to the casing, and wedge-shaped flanges carried by each plate for receiving and supporting the lower edges of the sides of the casing, the plates constituting stops for preventing inward flexure of the sides.

3. A portable surfaei ngmachine, comprising a hollow inverted casing, a cutter-head supported therein, the lower edges of the sides of the casing being oppositely beveled, a plurality of plates extending beneath the casing to form a bottom therefor, the plates movable toward and from each other and the cutterhead, lugs carried by the plates, the sides provided with slots inclined parallel with the inclined lower edges thereof and means passing through the slots and lugs to adj ustably retain the plates and easing together.

4:. In a portable surfacing-machine, the combination with a casing, of a cutter carried thereby, means for operating the cutter and adjusting it relative to the work, a handle pivotally secured at one end to the casing, means for adjusting the handle at various inclinations, a receptacle one end of which is removably carried by the handle, a conveyer located within the casing, the mouth of the conveyer located adjacent the cutter, the opposite end of the conveyer passing outside the casing, the opposite end of the receptacle secured around and supported by the projecting end of the conveyer.

5. In a portable surfacing-machine slidable upon the surface under treatment, the com bination with a casing having an open bottom, of adjustable plates for partially closing the open bottom of the casing, the plates movable toward and from each other, a cutter carried by the casing and engaging the surface to a greater or lesser extent corresponding with the positions of the plates relative to each other, the casing resting upon the plates, means carried by the casing for driving the cutter, and an open-ended conveyer project;- ing from a point adjacent the cutter and within the casing to a point outside the casing.

6. In a portable surfacing-machine, the combination with a hollow inverted casing, adjustable plates upon which the lower edges of the casing rest, the plates extending beneath the casing to form a bottom therefor, a cutter-head located intermediate the inner ends of the plates, a spout located within the casing, one end of the spout being bellmouthed and located in front of the cutterhead, the opposite end of the spout passing outside the casing, the rear end of the casing provided with an opening to prevent the formation of a vacuum rearwardly of the cutter-head and means for driving the.cutterhead.

In witness that I claim the foregoing I have hereunto subscribed my name this 28th day of September, 190a.

DICK b lA'lHEl'VS.

Witnesses:

G. E. HARPIIAM, MYRTLE JoNns. 

